Electric water-heater.



Patented July 6, 1909.

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H. W. DENHARD. ELECTRIC mama HEATER. APPLIQATIONPILBDJUN 25, 190a.

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HARRY W. DENHAHD. Oi SAP-l l lTtANClSCQ, CALIFORNIA, ASSIGNOR TO GEORGEKAfiZENSTTElN, .13., OF SAN FRAlFlFlSF-O, (.AIJFORNIA.

iipecificatioii of Letters Patent.

Patented 3'u1v 8. 1909.

Application flied Film 25, 1988. Serial 1%. $20,372.

surrounding the extension, and in order to secure 2L circulation throughthe electrical heater, oi the Writer in the fluid chamber, a centraltube is provider, having openings at the bottom so that-the Water passesdown- Wardly through the tube and out into the space around the controltube formed by the outer heating tube, and upwerdiy into the body ofwot-er.

in the present construction I heve aimed to simplify and chcepen thedevice of the potent without impairing its cliiciency, and havesucceeded in doing this by changing the form of the inner feed tube ofthe patent referred to, melting this a readily detachable tube ofrelatively small diameter and having it deflecting disk extending overthe end of the outer tube or heating chsinber so that the feed waterpasses down through the opening of the inner tube into the heating chenrher and upwardly under the edges of the dish into the reservoir. The uward movement of the tube with its disk is limited as hereinafter morefully described.

In the sccomponying drawing Figure 1 shows 2. sectionol view of theinvention. Fig. 2 is a detail.

The Water or liquid chamber is shown at A and the electrical. hostingsttachment is practically the some as that shown in the aforesaidpatent, being of tubular form and having a Watertight connectiou withthe bot tom of the reservoir. The external periphcry of the chamber iscovered with so insulating material such as mics, and coiied ebout theinsulation are the Wires 7. The electrical connections are made in theusual Way and me be as described in the potent.

' he heating tube or chamber hes s roduccd up or end opening into therescrvoir A, am in this present construction of the device 1 modifyslightly the form of thetube 4 of Potent 852,854. Instead of using atube of relatively large diameter 1 substitute-a tube of small diameter,this tube being open at the top and bottom, the tube being indi- 6vceted at i, and at its upper end'it carries a dish of 8169i) motel 5through a hole in the center of which the tube posses, extendin slightlyabove the upper surface thereo This dish. is larger in diameter than theopening from the heating chamber 2, so as. to pro: vide for c. propercirculation, the feed water passing down through the tube into theheatmg chamber, and as it becomes heated the water passes upwardlyunderthe edge of the disk. The tube with its disk iscllowed a.- certsinfree movement so as to prevent the formation of pressure Within theheating chamber, as by the generation of steam, and yet. theconstruction is such as to prevent'the, disk and tube from beingdetached from. its connection with the hosting chamber except whengthisis done forcibly and manually for cleaning or other purposes. This iscccom plished by securing to the tube 4 bent srms of curing Wire 8,which normally are expended beyond the diameter of the outlet from theheating chsmber. These arms are pressed inwardly and forced through. thereduced outlet of the heating chamber as the. tube 4 is put in place,and the arms expen' ing in the heating chamber offers a resistance tothe displacement of the tube with its disk es soon as it is lifted to aposition Where the. spring arms come in contact with the wells of theoutlet, which, as has been stated, is ,of ice diameter than the heatingdiameter proper. The spring-arms are however, 10- hated a distance belowthe to r of the tube 4 so as to permit a sui'licient ree movement of thedish to allow the free discherge oi' the hot water and to prevent theformation of any considerable pressure. in the drawing, whilelIi'lG"'i1-3.I1l is shown with the water therein, for cleerness ofillustration the water 100 is not shown as filling the heating chamber.

What I claim is: l. A fluid heating apparatus consisting of e reservoiran electrically heated, extenslon of the reservoir and a. feed tube carring a 1 deflector device for'the hot Water, sustentielly as described.

2. in. on electrical heater, the'heoting chamber having a. discherge oening and a feed tube extending. into the c ember with means fordeflecting the rising current from 1 the descending current and thusrovidlng for proper circulation, substantie .y as de scribed.

. her 2, a feed tube, a deflecting disk carried,

thereby and means for limiting the upward movement of the disk,substantially as describei'l.

5. In an electrical heater, e heetin chemher 2, a feed tube, a deflectoreerried t ereby,

said tube and deflector being removable from the heating chamber,substegntiaily as described.

In testimony whereof} have aiiixed my signature in the presence of twowitnesses this 11th day of March, 1908.

HARRY W. DENHARD.

Witnesses FRANK L. OWEN, FLORA M. BARTEL,

